Update .gitlab-ci.yml

1 job for CI-test in 1 minute and 49 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Test
failed #110
build

00:01:49

 
Name Stage Failure
failed
build Test
Latexmk: Some operations failed, for the following tex file(s)
Forside.tex
main.tex
Overordnet.tex
Latexmk: Use the -f option to force complete processing,
unless error was exceeding maximum runs, or warnings treated as errors.
=== TeX engine is 'pdfTeX'
Latexmk: Errors, so I did not complete making targets
ERROR: Job failed: exit code 1